diff --git a/qse/lib/net/httpd.h b/qse/lib/net/httpd.h
new file mode 100644
index 00000000..22417c04
--- /dev/null
+++ b/qse/lib/net/httpd.h
@@ -0,0 +1,138 @@
+/*
+ * $Id$
+ * 
+    Copyright 2006-2011 Chung, Hyung-Hwan.
+    This file is part of QSE.
+
+    QSE is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as 
+    published by the Free Software Foundation, either version 3 of 
+    the License, or (at your option) any later version.
+
+    QSE is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public 
+    License along with QSE. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _QSE_LIB_NET_HTTPD_H_
+#define _QSE_LIB_NET_HTTPD_H_
+
+/* private header file for httpd */
+
+#include <qse/net/httpd.h>
+#include <qse/net/htrd.h>
+
+#include <pthread.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+typedef struct client_array_t client_array_t;
+
+union sockaddr_t
+{
+	struct sockaddr_in in4;
+	struct sockaddr_in6 in6;
+};
+
+typedef union sockaddr_t sockaddr_t;
+
+typedef struct task_queue_node_t task_queue_node_t;
+struct task_queue_node_t
+{
+	task_queue_node_t* next;
+	task_queue_node_t* prev;
+	qse_httpd_task_t task;
+};
+
+struct qse_httpd_client_t
+{
+	qse_ubi_t               handle;
+	int                     bad;
+	sockaddr_t              addr;
+	qse_htrd_t*             htrd;
+
+	struct
+	{
+		pthread_mutex_t  mutex;
+		struct
+		{
+			int count;
+			task_queue_node_t* head;
+			task_queue_node_t* tail;
+		} queue;
+	} task;
+};
+
+struct client_array_t
+{
+	int                 capa;
+	int                 size;
+	qse_httpd_client_t* data;
+};
+
+typedef struct listener_t listener_t;
+struct listener_t
+{
+	int family;/* AF_INET, AF_INET6 */
+	int secure;
+	
+	qse_char_t* host;
+	union
+	{
+		struct in_addr in4;
+		struct in6_addr in6;
+	} addr;
+
+	int port;
+	int handle;
+	listener_t* next;
+};
+
+struct qse_httpd_t
+{
+	QSE_DEFINE_COMMON_FIELDS (httpd)
+	qse_httpd_errnum_t errnum;
+	qse_httpd_cbs_t* cbs;
+
+	int stopreq;
+
+	struct
+	{
+		pthread_mutex_t mutex;
+		pthread_cond_t  cond;
+		client_array_t array;
+	} client;
+
+	struct
+	{
+		pthread_mutex_t mutex;
+		listener_t*     list;
+		fd_set          set;
+		int             max;
+	} listener;
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+qse_httpd_t* qse_httpd_init (
+	qse_httpd_t* httpd,
+	qse_mmgr_t*  mmgr
+);
+
+void qse_httpd_fini (
+	qse_httpd_t* httpd
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif